vulkan_device: don't use fixed cap for memory limits

src/common/settings.h

@@ -384,6 +384,12 @@ struct Values {
                                                                   AstcRecompression::Bc3,
                                                                   "astc_recompression",
                                                                   Category::RendererAdvanced};
+    SwitchableSetting<VramUsageMode, true> vram_usage_mode{linkage,
+                                                           VramUsageMode::Conservative,
+                                                           VramUsageMode::Conservative,
+                                                           VramUsageMode::Aggressive,
+                                                           "vram_usage_mode",
+                                                           Category::RendererAdvanced};
     SwitchableSetting<bool> async_presentation{linkage,
 #ifdef ANDROID
                                                true,

src/common/settings_enums.h

@@ -122,6 +122,8 @@ ENUM(AstcRecompression, Uncompressed, Bc1, Bc3);
 
 ENUM(VSyncMode, Immediate, Mailbox, Fifo, FifoRelaxed);
 
+ENUM(VramUsageMode, Conservative, Aggressive);
+
 ENUM(RendererBackend, OpenGL, Vulkan, Null);
 
 ENUM(ShaderBackend, Glsl, Glasm, SpirV);

src/video_core/vulkan_common/vulkan_device.cpp

@@ -1297,10 +1297,6 @@ u64 Device::GetDeviceMemoryUsage() const {
 }
 
 void Device::CollectPhysicalMemoryInfo() {
-    // Account for resolution scaling in memory limits
-    const size_t normal_memory = 6_GiB;
-    const size_t scaler_memory = 1_GiB * Settings::values.resolution_info.ScaleUp(1);
-
     // Calculate limits using memory budget
     VkPhysicalDeviceMemoryBudgetPropertiesEXT budget{};
     budget.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_BUDGET_PROPERTIES_EXT;
@@ -1331,7 +1327,15 @@ void Device::CollectPhysicalMemoryInfo() {
     if (!is_integrated) {
         const u64 reserve_memory = std::min<u64>(device_access_memory / 8, 1_GiB);
         device_access_memory -= reserve_memory;
-        device_access_memory = std::min<u64>(device_access_memory, normal_memory + scaler_memory);
+
+        if (Settings::values.vram_usage_mode.GetValue() != Settings::VramUsageMode::Aggressive) {
+            // Account for resolution scaling in memory limits
+            const size_t normal_memory = 6_GiB;
+            const size_t scaler_memory = 1_GiB * Settings::values.resolution_info.ScaleUp(1);
+            device_access_memory =
+                std::min<u64>(device_access_memory, normal_memory + scaler_memory);
+        }
+
         return;
     }
     const s64 available_memory = static_cast<s64>(device_access_memory - device_initial_usage);

src/yuzu/configuration/shared_translation.cpp

@@ -164,6 +164,11 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QWidget* parent) {
            "the emulator to decompress to an intermediate format any card supports, RGBA8.\n"
            "This option recompresses RGBA8 to either the BC1 or BC3 format, saving VRAM but "
            "negatively affecting image quality."));
+    INSERT(Settings, vram_usage_mode, tr("VRAM Usage Mode:"),
+           tr("Selects whether the emulator should prefer to conserve memory or make maximum usage "
+              "of available video memory for performance. Has no effect on integrated graphics. "
+              "Aggressive mode may severely impact the performance of other applications such as "
+              "recording software."));
     INSERT(
         Settings, vsync_mode, tr("VSync Mode:"),
         tr("FIFO (VSync) does not drop frames or exhibit tearing but is limited by the screen "
@@ -315,6 +320,11 @@ std::unique_ptr<ComboboxTranslationMap> ComboboxEnumeration(QWidget* parent) {
              PAIR(AstcRecompression, Bc1, tr("BC1 (Low quality)")),
              PAIR(AstcRecompression, Bc3, tr("BC3 (Medium quality)")),
          }});
+    translations->insert({Settings::EnumMetadata<Settings::VramUsageMode>::Index(),
+                          {
+                              PAIR(VramUsageMode, Conservative, tr("Conservative")),
+                              PAIR(VramUsageMode, Aggressive, tr("Aggressive")),
+                          }});
     translations->insert({Settings::EnumMetadata<Settings::RendererBackend>::Index(),
                           {
 #ifdef HAS_OPENGL